Just Add Water and This Tiny Emergency Flashlight Glows For 72 Hours

Source: http://gizmodo.com/just-add-water-and-this-tiny-emergency-flashlight-glows-1641612060

Because batteries have a limited shelf life , that flashlight you've been saving for an emergency might not actually work when you need it to. So instead of stocking up on candles, grab a couple of these tiny emergency lights from Eton that simply need you to add water to keep them lit for three full days.

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